class_docstr: Latent Variables Class
  
  Holds latent variable objects and contains method for latent variable manipulation. Latent variables are 
  referred to as z as shorthand. This is convention in much of the literature.
code: def get_z_transforms(self):
      transforms = []
      for z in self.z_list:
          transforms.append(z.prior.transform)
      return transforms
  
imports: import numpy
  import pandas
  from .covariances import acf
  from .output import TablePrinter
  from .inference import *
  from .families import Normal, t, TruncatedNormal, Cauchy, Skewt, InverseGamma, Flat, InverseWishart, Laplace
label_desc: Use image node_id 9 for calling the LatentVariables obj's underlying member method code with example usage: obj.get_z_transforms() and returns: transforms